Hydraulic pump



No. 625,29. Patented May l6, l899.. J. C. DEAN.

HYDRAULIC PUMP.

(Appliel-tion filed Aug. 81, 1897.)

2 Sheets-Sheet I.

(No Model.)

is ulllnn ll 2mm woes 7n: Nbmus PETERS ca. momuma. wAsamt-Tnn n cIINTTED STATES PATENT OEEIcE.

JOHN C. DEAN, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE DEAN BROTHERSSTEAM PUMP WORKS, OF SAME PLACE.

HYDRAULIC PUMP.

SPECIFICATIQN forming part of Letters Patent No. 625,291, dated May 16,1899.

Application filed August 31, 1897.

To all whom it may concern:

Be it known that I, JOHN C. DEAN, of Indianapolis, county of Marion, andState of Indiana, have invented a certain new and useful HydraulicPu mp;andldoherebydeclare that the following is a full,clear, and exactdescription thereof, reference being had to the accompanying drawings,in which like numerals refer to like parts.

This invention relates to a construction of hydraulic pumps where a veryhigh pressure is desired. It is especially adapted for use in duplexpumps, resulting in the attainment of great strength combined withunusual compactness. My invention, furthermore, permits the hydraulicchest and cylinders for the plungers to be made of forged steel.

One feature of my invention consists in drilling through a solid blockof forged steel a conduit for the water or other fluid, with seats forthe suction and discharge valves in the conduit, and a cylinderconnected With said conduit, in which the plunger may opcrate.

Another feature of my invention consists in making the cylinders for theplunger separate from the said block and connecting them securely bydrilling a recess into the block and threading it and screwing theexternally-threaded end of the cylinder into it, a connecting-port beingdrilled from such recess for the cylinderinto the conduit through theblock.

Another feature of my invention consists in combining a plurality ofsuch pumping devices into one hydraulic steam-pump, as hereinafterappears. The full nature of my invention will appear from theaccompanying drawings and the description and claims following. v

In the drawings, Figure 1 is a perspective of the pump end of ahydraulic steam-pump containing the pumping machinery. Fig. 2 is avertical cross-section thereof on the line A A of Fig. 6, the lefthalfbeing an end elevation of the block or hydraulic chest and connectingparts on the left side of the machine and the right half being a sectionthrough one of the conduits in the block on the right-hand side of saidmachine. Fig. 3

Serial No. 650,212. (No model.)

is a vertical longitudinal section on the line B B of Fig. 2. Fig. 4 isa central vertical cross-section on the line C O of Figs. 3 and 6. Fig.5 is a side elevation of the device with the right-hand end in verticallongitudinal section on the line D D of Fig. 2. Fig. 6 is a plan view ofthe device with the right-hand end thereof broken away and with one partin horizontal longitudinal section on the line E E of Figs. 4 and 5.

In detail, 1 is the base-plate, upon which is mounted the base 2, thatsupports the block 3 or the hydraulic chest. A pair of these blocks isprovided, one on each side.

The blocks 3 consist of forged steel provided with certain apertures andconduits drilled in it. In the first place I drill a vertical aperture 4through the block. Then another vertical hole 5 is drilled from theupper side to a point about midway. These two apertures 4 and 5 areconnected by a horizontal passage 6. The upper end of the aperture 4 isthreaded to receive the valve-bolt 7 that contains the suction-valve 9.A suitable seat 10 for said suction-valve 9 is provided in the lowerportion of the aperture 4 by means of bronzemetal or other suitablematerial. The upper part of the hole 5 is similarly threaded to receivethe valve-bolt 11, that contains or holds the discharge-valve 12, formedsimilar to the suction-valve and resting on the seat 8. These featuresappear plainly in Fig. 2.

The conduit above described is duplicated in the block, as seen in Figs.3 and 6, and is continued by a passage 13, the two extending diagonallyfrom the pair of holes 5 until they meet in the passage 14, as shown inFig. 6, which connects with the outlet 15.

The water or fluid is supplied to the conduit extending through theblock 3, that has been described, through the conduits 16, that leadfrom the inlet 17, and through the frame 18, that connects the bases 2,as seen clearly in Fig. 2. There are two of the conduits 16 on eachside, as is to be seen in Fig. 3.

The block 3 is drilled out on each side and threaded to receive thecylinder 19, as seen in Fig. 5. From the seat of said cylinder in theblock an orifice connects the chamber in the cylinder with thehorizontal portion 6 of the conduit through the block. On the outer endof said cylinder 19 a collar 20 is secured, as seen in Fig. 5, and itsupports the guide rods 21 and 22. The rod 21 extends through saidcollar 20, while the rod 22 reciprocates in a groove on the upper sideof said collar. A plunger 23 operates in the cylinder 19, extendingthrough a suitable packing construction 29, and is supported in itsouter end by a cross-head 25.

The cylinder 19 and plunger 23 are duplicated on each side of the block3, while the guide-rods 21 and 22 extend for the full length of thedevice, as seen in Fig. 5, the rod 21 passing through the opening in thebase 2 and the rod 22 extending above the block 3.

The collar 24, that corresponds with the collar 20, above described, isprovided with opposit-ely-extending arms 30, that are secured bysuitablerods to the steam-cylinder. This connection is not shown, as it isimmaterial to the explanation of this invention.

The combined construction, as is seen in Fig. 2, consists of a baseportion with one inlet, but with four conduits leading therefrom, two tothe right and two to the left of the two blocks 3, one on each side,provided with two sets of conduits connecting with the conduits 16 inthe base portion and an outlet portion or block 26. This portion 26consists of two horizontally-extending portions or arms 27 on each sidethat are secured to the blocks 3 by the bolts 28 and theupwardly-extending portion, as seen in Fig. 3. The conduits through thisportion 26 consist of the conduits 1A and 15,heretofore mentioned. Itisseen that there are two pairs of plungers, each pair being secured so asto operate together and are driven from a duplex steam-cylinder (nothereshown) or any other suitable means. Vhile one of said plungers isdrawing the fluid or water into the conduits 6 and water-cylinder on oneside, the other plunger connected up with it is forcing the fluid orwater out of the conduit 6 and water-cylinder on the other side. As theplunger is drawn out and the water is drawn into the conduit 6 andwater-cylinder the valve 9 lifts, permittingits ingress, while thesuction on the valve 12 prevents its egress. As the plunger is driven inand the water is being forced out of the conduit 6 and watercylinder thevalve 12 lifts, while the pressure holds the valve 9 down. With thisconstruction it is seen that it is possible to attain a very highpressure. The strain in the operation of pumping comes on the block 3.Since the dimensions of the conduits bear a very small ratio to thedimensions of the block and the said block is a solid one, exceptingsuch conduits, it is obvious that the block will resist any possiblepressure that can be brought to bear by any plunger. By screwing thecylinders 19 into the said blocks, after drilling a seat for them, it ispossible to make the blocks and the cylinders, as has been stated, offorged steel, thereby acquiring the greatest possible strength.

lVhat I claim as my invention, and desire to secure by Letters Patent,is-

1. A hydraulic pump including a pair of blocks provided with conduitstherethrough substantially as shown, a cylinder connected with eachconduit, a valve in such conduit arranged on each side of the cylindersubstantially as shown, and an intermediate block secured between theother two and provided with conduits leading from the conduits in theother block to a single outlet.

2. A hydraulic pump including a pair of blocks provided with conduitstherethrough substantially as shown, a cylinder connected with eachconduit, avalve in such conduit arranged on each side of the cylindersubstantially as shown, an intermediate block secured between the othertwo and provided with conduits leading from the conduit in the otherblocks to a single outlet, and a base upon which said pair of blocks issecured and which is provided with conduits leading from a single inletto the conduits in such blocks.

In witness whereof I have hereunto set my hand this 16th day of August,1897.

JOHN G. DEAN.

\Vitnesses:

V. H. LooKwooD, ZULA GREEN.

